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Article History

Accepted: 3 October 2021

First Online: 1 November 2021

Declarations

:

: No funding was received for this work.

: Chihaya Shiragasawa is an employee of Astellas Pharma Inc., however this work was not undertaken as part of his employment. Mamoru Narukawa has no conflicts of interest directly relevant to the contents of this article.

: Not applicable.

: Not applicable.

: Not applicable.

: The datasets analyzed during the current study are available from the corresponding author on reasonable request.

: Not applicable.

: CS and MN designed the study; CS carried out the data collection; CS and MN performed the data analysis; CS drafted the manuscript; and MN reviewed and revised the manuscript. All authors have read and approved the final version and agree to be responsible for this work.